diff --git a/content/treestyletab/treestyletab.css b/content/treestyletab/treestyletab.css
index 2007a22e..332a065e 100644
--- a/content/treestyletab/treestyletab.css
+++ b/content/treestyletab/treestyletab.css
@@ -150,7 +150,7 @@ tabbrowser[treestyletab-tabbar-autohide-mode="1"][treestyletab-tabbar-autohide="
 	min-width: 1px !important;
 }
 .tabbrowser-tabs[treestyletab-mode="vertical"] .tabbrowser-tab:not([pinned])[fadein] {
-	max-width: 65001px !important;
+	max-width: 65250px !important;
 }
 
 #TabsToolbar,